This fixes a failure in `test_contacts` where we were receiving the initial `proto::UpdateContacts` message before `UserStore` had a chance to register a message handler for it.
Zed Server
This crate is what we run at https://collab.zed.dev.
It contains our back-end logic for collaboration, to which we connect from the Zed client via a websocket after authenticating via https://zed.dev, which is a separate repo running on Vercel.